A stunt flier was killed when his military training plane crashed in flames before spectators at the Mammoth Lakes Air Show, authorities said. Gary J. Loundagin, 42, of Livermore had been trying to make a loop during an aerobatics demonstration when his plane crashed, according to a Mono County Sheriff's Department dispatcher. No one else was injured in the afternoon crash at the Mammoth-June Lakes Airport in the eastern Sierra resort community 300 miles north of Los Angeles. A Federal Aviation Administration official from Reno reportedly witnessed the crash and was investigating. Authorities said the plane Loundagin was flying was privately owned, but it wasn't immediately known if he was the owner.